# physics

posted by .

what is the speed of 1kg object when the kinetic energy is 1 joule

• physics -

KE = m•v²/2,
v =sqrt(2•KE/m)

• physics -

1.41 m/s

## Similar Questions

2. ### physics

the speed of a bullet of mass is 40gram is 216km/h what is the kinetic energy in joule
3. ### physical science

a 1kg object has kinetic energy of 1J when its speed is?
4. ### Physics ~Conservation of Energy~

1.) At one point in its fall, an object (m=2.5 kg.) has a kinetic energy of 5 J(joule) and a potential energy of 10 J. a) what is the total energy of the system?
5. ### Physics

At t=1.0s, a 0.60kg object is falling with a speed of 6.0 m/s. At t=2.0s, it has a kinetic energy of 25 J. a) What is the kinetic energy of the object at t=1.0s?
6. ### physics

Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 4.44 rad/s. The mass m of each object and its perpendicular distance r from the z axis are as follows: (1) m1 = 6.00 kg and r1 = 1.00 m, (2) …
7. ### Physics

For a 0.1-kg frog to jump to a height of 80cm requires how much energy in joules?
8. ### physics

Determine whether each statement below is true or false. The force necessary to lift an object is its mass times g. Kinetic energy is the energy of motion. Stopping distance is doubled, if speed is doubled. Work is the product of force …
9. ### physics multiple choice MCQ 7- i need help please @all respective sir & bro

the unit of energy in S.I units is? a. watt b. joule c. joule/s d. joule/m e. joule m
10. ### physics help

At t=1.0s, a 0.49 kg object is falling with a speed of 6.5 m/s. At t=2.0s, it has a kinetic energy of 38 J. What is the kinetic energy of the object at t=1.0s?

More Similar Questions